We show that trees of manifolds, the topological spaces introduced by Jakobsche,
appear as boundaries at infinity of various spaces and groups. In particular, they
appear as Gromov boundaries of some hyperbolic groups, of arbitrary dimension,
obtained by the procedure of strict hyperbolization. We also recognize these spaces as
boundaries of arbitrary Coxeter groups with manifold nerves and as Gromov
boundaries of the fundamental groups of singular spaces obtained from some
finite-volume hyperbolic manifolds by cutting off their cusps and collapsing the
resulting boundary tori to points.
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